Monitoring Cetaceans in the North Pacific

Two projects were undertaken to monitor cetaceans in the North Pacific. The first was designed to obtain passive acoustic data from the U.S. Navy's Northern Edge Range. Three instruments were deployed in April 2008 to monitor both high (up to 25 kHz) and low (up to 1 kHz) frequencies for odonto...

Full description

Bibliographic Details
Main Author: Stafford, Kathleen M.
Other Authors: WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
Format: Text
Language:English
Published: 2009
Subjects:
Biology
Physical and Dynamic Oceanography
Acoustics
*MONITORING
*WHALES
*BIOACOUSTICS
*NORTH PACIFIC OCEAN
*ACOUSTIC DATA
*OCEANOGRAPHIC DATA
*ANIMAL COMMUNICATION
UNDERWATER COMMUNICATIONS
UNDERWATER SOUND
SURFACE TEMPERATURE
HYDROPHONES
OCEAN SURFACE
CHLOROPHYLLS
ACOUSTIC DETECTION
ACOUSTIC RECORDING SYSTEMS
SEASONAL VARIATIONS
ODONTOCETES
TOOTHED WHALES
BEAKED WHALES
MYSTICETES
BALEEN WHALES
BLUE WHALES
FIN WHALES
*WHALE VOCALIZATIONS
ACOUSTIC MONITORING
ORFIN ACOUSTIC DATA LOGGERS
NORTHERN EDGE RANGE
DAY LENGTH
SEA SURFACE TEMPERATURE
GEOGRAPHIC VARIATIONS
SOSUS(US NAVY SOUND SURVEILLANCE SYSTEM)
Pacific
baleen whales
Blue whale
Fin whale
toothed whales
Online Access:http://www.dtic.mil/docs/citations/ADA499890
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA499890
Description
Summary:Two projects were undertaken to monitor cetaceans in the North Pacific. The first was designed to obtain passive acoustic data from the U.S. Navy's Northern Edge Range. Three instruments were deployed in April 2008 to monitor both high (up to 25 kHz) and low (up to 1 kHz) frequencies for odontocetes and mysticetes, respectively. Unfortunately, these instruments did not record any data. The second project was to analyze retrospective data obtained by analysts at the Whidbey Island NAVFAC for broad regions of the North Pacific. Long-term (1996-2002) trends of blue and fin whale vocalizations were found to have strong seasonal and geographic differences. Furthermore, the number of fin whale call events detected increased significantly over time throughout the North Pacific. Onset and continuation of fin whale calling seemed to be primarily driven by day length, while blue whale calling behavior was influenced by combinations of sea surface temperature, surface chlorophyll a concentration, and day length. Two manuscripts for peer-reviewed publications have been prepared for these data. The original document contains color images.

Similar Items